Make the marinade: In a food processor or blender, combine the allspice, Scotch bonnet peppers (or habaneros), thyme, garlic, ginger, brown sugar, soy sauce, olive oil, vinegar, lime juice, cinnamon, nutmeg, black pepper, and salt. Blend until smooth. Taste the marinade and adjust the seasoning as necessary—if you like it spicier, add more Scotch bonnet or chili peppers.
- Marinate the chicken: Place the chicken pieces in a large resealable plastic bag or shallow dish. Pour the marinade over the chicken, making sure it is well-coated. Seal the bag or cover the dish and refrigerate for at least 2-4 hours, preferably overnight. The longer the chicken marinates, the more flavorful it will be.
- Preheat the grill: Preheat your grill to medium-high heat (about 375°F or 190°C). If you are using a charcoal grill, set up for indirect heat, so the chicken doesn’t cook too quickly on the outside while remaining raw inside.
- Grill the chicken: Remove the chicken from the marinade, letting any excess drip off. Lightly oil the grill grates or use cooking spray to prevent sticking. Place the chicken on the grill, skin-side down if using bone-in cuts. Grill for about 6-8 minutes per side, depending on the size of the chicken pieces, until the chicken is cooked through and the internal temperature reaches 165°F (74°C). You should see some nice char marks, but be careful not to burn the chicken.
- Serve: Once the chicken is cooked, remove it from the grill and let it rest for a few minutes before serving. Garnish with fresh lime wedges and additional thyme or cilantro if desired.
- Optional: Serve with traditional sides: Serve your jerk chicken with rice and peas (a popular Jamaican side dish), coleslaw, or fried plantains for a complete meal.